P 08456 LED Lighting for an Underwater ROV

P 08456 -LED Lighting for an Underwater ROV Jeremy Schiele-Project Manager Jonathan Lent-Mechanical Engineer Ryan Seeber-Computer Engineer Justin Van. Slyke-Mechanical Engineer Benoit Hennekinne-Electrical Engineer Sponsored by:

P 08456 -Project Description o o o End Users: Underwater ROVs and RIT’s robotic platforms (RP-1, 100) Waterproof light for underwater exploration Top Level Requirements (eng. Specs): n n n Waterproof design (min. 400 ft depth) High light output (min 250 lm @ 5 Watts) Low power consumption (max. 10 Watts) Controllable from remote surface unit Modular housing design must be able to house thruster’s motor unit as well

P 08456 -Light Unit Concept o o o Watertight bulkhead electrical connector Corrosion resistant aluminum housing Two LED colors available Light unit controllable from surface Two mounting systems available

P 08456 -Thruster Housing Concept o Utilizes the same rear portion as LED light unit, bulkhead connector, and PCB assembly

P 08456 -Mounting System Concept Two mounting systems to meet specific requirements for each housing application o Light = Adjustability Thruster = Rigidity

P 08456 -Functional Flowchart Battery Power Convert battery power into required voltage Provide LEDs w/ correct amt. of power Light Heat User Input Process Input Send PWM to LED driver Receive data from Temp. sensor Temp. Data

P 08456 -Summary of Design Review o o Continue to meet with customer to fine tune housing design Breadboard of electrical components is next step for verification

P 08456 -High Risk Areas o Risk: Pressure & Sealing Requirements n n o n FEA analysis of housing design Pressure chamber testing of prototype at Hydroacoustics Inc. Risk: Heat Dissipation n Operation pressure: 216 psi (500 ft) All leak-points need to be verified and secured Mitigation: n o LED board produces up to 10 watts of heat Can cause premature failure for LEDs and damage other electronics Mitigation: n n n Thermal resistance analysis of LED board Separate LEDs from other electrical components LED board will have extra thick copper traces to evacuate heat

P 08456 -Product Development Phase 0: Planning Phase 1: Concept Development Phase 2: System Level Design Phase 3: Detailed Design Phase 4: Testing & Refinement MSD I 0 1 2 MSD II 3 4 Current Phase of Development Final Production Units

P 08456 -Current State of Design o Current design meets all specs possible at this point in development

P 08456 -Current Budget o Cost / LED light unit: $380. 87 Cost / thruster housing unit: $323. 69 Development & bread board: $200. 00 Prototype Unit: $150. 00 o Total Light Unit Budget: $1873. 48 o Product provided to P 08454: $1295. 00 o o o

P 08456 -MSDII Schedule Milestones o o o o 12/7 Machine Drawings finalized for CNC 12/12 All off-the-shelf parts ordered by 12/14 Housing prototypes made 1/13 Pressure, light, and PCB testing complete 2/18 Documentation complete (EDGE, tech paper, poster) 2/20 Production of 8 units completed 2/22 Final Project Review